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18057045 = 356012003
BaseRepresentation
bin100010011100…
…0011101010101
31020222101121110
41010320131111
514110311140
61443005233
7306324306
oct104703525
936871543
1018057045
11a213586
126069819
133982c56
1425807ad
1518ba380
hex1138755

18057045 has 16 divisors (see below), whose sum is σ = 28953792. Its totient is φ = 9609600.

The previous prime is 18057031. The next prime is 18057079. The reversal of 18057045 is 54075081.

18057045 is a nontrivial binomial coefficient, being equal to C(6010, 2).

It is not a de Polignac number, because 18057045 - 24 = 18057029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8014 + ... + 10016.

It is an arithmetic number, because the mean of its divisors is an integer number (1809612).

Almost surely, 218057045 is an apocalyptic number.

18057045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18057045 is the 6009-th triangular number and also the 3005-th hexagonal number.

It is an amenable number.

18057045 is a deficient number, since it is larger than the sum of its proper divisors (10896747).

18057045 is a wasteful number, since it uses less digits than its factorization.

18057045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18057045 is about 4249.3581868325. The cubic root of 18057045 is about 262.3506996801.

The spelling of 18057045 in words is "eighteen million, fifty-seven thousand, forty-five".

Divisors: 1 3 5 15 601 1803 2003 3005 6009 9015 10015 30045 1203803 3611409 6019015 18057045